JP4361775B2 - Bridge erection method and bridge erection device - Google Patents

Bridge erection method and bridge erection device Download PDF

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JP4361775B2
JP4361775B2 JP2003379718A JP2003379718A JP4361775B2 JP 4361775 B2 JP4361775 B2 JP 4361775B2 JP 2003379718 A JP2003379718 A JP 2003379718A JP 2003379718 A JP2003379718 A JP 2003379718A JP 4361775 B2 JP4361775 B2 JP 4361775B2
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work vehicle
segment
erection
transfer carriage
lifting mechanism
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JP2005139831A (en
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▲徳▼博 長尾
昇孝 菅野
浩史 深谷
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株式会社富士ピー・エス
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本発明は、プレストレスコンクリート橋梁の架設に使用する橋梁架設工法および橋梁架設用装置に関するものである。   The present invention relates to a bridge erection method and a bridge erection device used for erection of a prestressed concrete bridge.

従来より橋脚を中心として両側へ釣合を保持しつつ、セグメントを順次架設してゆく架設工法が種々提案されている。プレキャストコンクリートブロック(セグメント)を使用した橋梁架設工法は、工事期間の短縮化と施工の確実性等の長所を有するために、近年広く使用されている。   Conventionally, various construction methods have been proposed in which segments are erected sequentially while maintaining balance on both sides around a pier. The bridge erection method using precast concrete blocks (segments) has been widely used in recent years because it has advantages such as shortening the construction period and reliability of construction.

従来の橋梁架設工法としては、例えば、工場或いはヤードで製造されたプレキャストブロックを橋桁上を走行する移送台車で吊り下げ搬送し、架設作業車まで搬送した後、架設作業車上へ乗り移らせてプレキャストブロツクを吊り上げ接合するものが知られている。
また、橋梁架設用装置として、橋桁上を移動する自走足場を装備した自走手段と、この自走手段に設けられ自走手段上を自在に移動する自走揚重手段とからなり、自走手段が既設桁の所定位置に設けられた固定手段により固定されるものが知られている。また、自走足場は、プレキャストブロックの接着用自走足場とプレストレス用ケーブルの緊張用自走足場とからなる装置が知られている。
特許第2768281号 特開平10−195827号
As a conventional bridge erection method, for example, a precast block manufactured in a factory or a yard is suspended and conveyed by a transfer carriage traveling on a bridge girder, conveyed to an erection work vehicle, and then transferred onto the erection work vehicle. There is known a method in which a precast block is lifted and joined.
The bridge erection device is composed of self-propelled means equipped with a self-propelled scaffold that moves on the bridge girder, and self-propelled lifting means that is provided on the self-propelled means and moves freely on the self-propelled means. It is known that the running means is fixed by fixing means provided at a predetermined position of the existing girder. In addition, as a self-propelled scaffold, an apparatus including a self-propelled scaffold for bonding a precast block and a tension self-propelled scaffold for a prestress cable is known.
Japanese Patent No. 2768281 JP-A-10-195827

しかし、上記従来の橋梁架設工法において、架設に使用する設備装置の総重量がかなりの重量になると云う欠点が存在した。また、自走可能な走行台車と架設作業車との二分割設備であるため、荷を吊った状態の橋形クレーンが架設作業車に乗り移る際、架設作業車に敷設したレールと段差がある場合には、乗り移りが困難となる。また、乗り移る時に振動や衝撃が生ずるとともに、作業に時間を要するものであった。更に、走行台車に自走装置がない場合、チェーンブロック等で移動しなければならず、移動作業に手数と時間を要するものであった。また、既設桁上に配置したH鋼上を架設作業車が走行する形式であるために、架設作業車の移動に時間を要すると云う欠点が存在した。   However, the conventional bridge erection method has a drawback that the total weight of the equipment used for erection becomes a considerable weight. In addition, because it is a two-part facility consisting of a self-propelled traveling cart and an erection work vehicle, when a bridge-type crane with a load suspended moves to the erection work vehicle, there is a step difference from the rail laid on the erection work vehicle It is difficult to transfer. In addition, vibrations and shocks are generated when changing, and work takes time. Furthermore, when the traveling carriage does not have a self-propelled device, it has to be moved by a chain block or the like, which requires time and labor for the moving work. In addition, since the construction work vehicle travels on the steel H arranged on the existing girders, there is a drawback that it takes time to move the construction work vehicle.

この発明は上記に鑑み提案されたもので、移送台車から架設作業車へのプレキャストブロックの吊り換えを円滑に行うとともに、施工作業の迅速性を確保し、架設作業車の総重量を軽減することのできる橋梁架設用工法および橋梁架設用装置を提供することを目的とする。   The present invention has been proposed in view of the above, and smoothly rehangs a precast block from a transfer carriage to an erection work vehicle, while ensuring the speed of construction work and reducing the total weight of the erection work vehicle. An object of the present invention is to provide a bridge erection method and a bridge erection device that can be used.

上記目的を達成するために、請求項1に記載の発明は、主桁上に設置された移送台車用レール上の移送台車に備えられた揚重機構でセグメント取付梁に取り付けられたセグメントを地上から吊り上げるセグメント吊り上げ工程と、セグメントを吊ったまま移送台車を移送台車用レールに沿って架設作業車の作業位置まで前進させる移送台車前進工程と、移送台車の揚重機構に設けた張出しビームを架設作業車に備えた揚重機構で仮吊りする仮吊り工程と、張出しビーム上でセグメントを架設作業車の揚重機構位置まで前進させ、セグメントを架設作業車の揚重機構に吊り換える吊り換え工程と、移送台車を移送台車用レールに沿って初期位置まで後退させる移送台車後退工程と、架設作業車の揚重機構でセグメントを施工位置まで吊り上げる吊り上げ工程と、セグメントの接合面に接着剤を塗布するとともに、シースにPC鋼材を挿入して緊張することによりセグメントを接合するセグメント接合工程と、接合されたセグメントからセグメント取付梁を切り離し、架設作業車を主桁に固定するセット用アンカーを主桁から外し、架設作業車を下から支えるアンカージャッキを収縮させて主桁から引き離すとともに下端が主桁に固定された移動用反力受ローラで上から支承しつつ、駆動機構により架設作業車を主桁上で前進させる架設作業車移動工程と、架設作業車の移動後、セット用アンカーとアンカージャッキを主桁にセットするとともに、下端が主桁に固定された移動用反力受ローラを前進させた位置の主桁にセット固定する架設作業車固定工程とからなることを特徴とする。 In order to achieve the above object, the invention described in claim 1 is characterized in that a segment attached to a segment attachment beam is grounded by a lifting mechanism provided in a transfer carriage on a transfer carriage rail installed on a main girder. The segment lifting process, lifting the segment, lifting the transfer carriage along the transfer carriage rail to the working position of the erection work vehicle, and the extension beam provided on the lifting mechanism of the transfer carriage. Temporary suspension process of temporarily suspending with the lifting mechanism provided on the work vehicle, and the suspending process of advancing the segment to the lifting mechanism position of the construction work vehicle on the overhanging beam and suspending the segment to the lifting mechanism of the construction work vehicle If, lifted and movable carriage retraction step of retracting to its initial position along the conveying car rail for the movable carriage, a segment of the lifting mechanism erection work vehicle to the working position A step-up Ri, together with applying an adhesive to bonding surfaces of the segments, disconnect the segment bonding step of bonding the segments by tensioning by inserting a PC steel sheath, the segment mounting beam from the bonded segments, erection a set anchors to secure the service vehicle to the main girder removed from the main girder, in the reaction force receiving roller moves the lower end is fixed to the main girder with separate the erection work vehicle from the main digits anchor jack is contracted to support from below The construction work vehicle moving process in which the construction work vehicle is moved forward on the main girder by the drive mechanism while being supported from above, and after the construction work vehicle is moved, the setting anchor and the anchor jack are set on the main girder, and the lower end is mainly used. The construction work vehicle fixing step includes setting and fixing the reaction force receiving roller for movement fixed to the girder to the main girder at the advanced position .

また、請求項2に記載の発明において、前記セグメント吊り上げ工程において、複数のセグメントを吊り上げることを特徴としている。   The invention according to claim 2 is characterized in that a plurality of segments are lifted in the segment lifting step.

また、請求項3に記載の発明は、既設桁上を自走可能な架設作業車と、既設桁上を自走可能な移送台車とを備えた橋梁架設用装置であって、前記架設作業車に揚重機構と、作業台を備えるとともに、前記移送台車に移送台車用の揚重機構を備え、前記移送台車は、前記架設作業車の両側に敷設されたレール上を架設作業車の位置まで移動可能であり、前記移送台車用の揚重機構は、張出しビームと電動トロリーとを備え、吊り上げたセグメントを前記架設作業車に備えられた揚重機構に乗り換え可能であることを特徴としている。 The invention described in claim 3 is a bridge erection device comprising an erection work vehicle capable of self-propelling on an existing girder and a transfer carriage capable of self-propelling on the existing girder, wherein the erection work vehicle A lifting mechanism and a workbench, and the transfer carriage includes a lifting mechanism for the transfer carriage. The transfer carriage extends on rails laid on both sides of the construction work vehicle to the position of the construction work vehicle. movable der is, lifting mechanism for the transfer carriage is provided with a overhanging beam with an electric trolley, as a feature capable der Rukoto transfer the lifting segment in lifting mechanism provided on the erection work vehicle Yes.

また、請求項5に記載の発明は、前記架設作業車に設けられたノーズの長手方向に移動可能な複数の作業台吊り上げ機構によって吊り上げられた作業台は、セグメントの吊り上げの際にセグメントの前後に開閉可能であることを特徴とする。 The invention of claim 5, wherein the erection plurality of workbench lifted by the work table lifting mechanism which can be moved in the longitudinal direction of the nose provided in the working vehicle, the front and rear segments when the segments lifting It can be opened and closed.

この発明は上記した構成からなるので、以下に説明するような効果を奏することができる。   Since this invention consists of an above-described structure, there can exist an effect which is demonstrated below.

請求項1に記載の発明では、移送台車に備えられた揚重機構でセグメントを地上から吊り上げるセグメント吊り上げ工程と、セグメントを吊ったまま移送台車を架設作業車の作業位置まで前進させる移送台車前進工程と、移送台車の揚重機構に設けた張出しビームを架設作業車に備えた揚重機構で仮吊りする仮吊り工程と、張出しビーム上でセグメントを架設作業車の揚重機構位置まで前進させ、セグメントを架設作業車の揚重機構に吊り換える吊り換え工程と、移送台車を初期位置まで後退させる移送台車後退工程と、架設作業車の揚重機構でセグメントを施工位置まで吊り上げる吊り上げ工程と、セグメントの接合面に接着剤を塗布するとともに、シースにPC鋼材を挿入して緊張することによりセグメントを接合するセグメント接合工程と、セグメント取付梁を切り離し、セット用アンカーを外し、アンカージャッキを引き込み、駆動機構により架設作業車を前進させる架設作業車移動工程と、架設作業車の移動後、セット用アンカーとアンカージャッキを主桁にセットするとともに、移動用反力受ローラを前進させ主桁にセットする架設作業車固定工程とからなるので、セグメントを移送台車から架設作業車に吊り換える作業が容易となり、施工作業の迅速化が可能となる。また、セグメントの吊り上げ位置が限定される場合でも、セグメント吊り上げ用大型重機が不要である。   In the first aspect of the present invention, a segment lifting process in which the segment is lifted from the ground by a lifting mechanism provided in the transfer carriage, and a transfer carriage advancement process in which the transfer carriage is advanced to the working position of the construction work vehicle while the segment is suspended. And a temporary suspension process in which the extension beam provided in the lifting mechanism of the transfer carriage is temporarily suspended by the lifting mechanism provided in the construction work vehicle, and the segment is advanced to the lifting mechanism position of the construction work vehicle on the extension beam, A suspending process for suspending the segment to the lifting mechanism of the erection work vehicle, a retraction process for moving the trolley to the initial position, a lifting process for lifting the segment to the construction position by the lifting mechanism of the erection work vehicle, and a segment Segment jointer that joins segments by applying PC steel to the sheath and tensioning it while applying adhesive to the joint surface The segment mounting beam is cut off, the set anchor is removed, the anchor jack is pulled in, the construction work vehicle moving process in which the construction work vehicle is advanced by the drive mechanism, and after the construction work vehicle is moved, the set anchor and the anchor jack are mainly used. Since it is set in the girder and the construction work vehicle fixing process in which the moving reaction force receiving roller is moved forward and set in the main girder, the work of suspending the segment from the transfer carriage to the construction work vehicle becomes easy, and the construction work can be performed quickly. Can be realized. Moreover, even when the lifting position of the segment is limited, a large heavy machine for lifting the segment is unnecessary.

請求項2に記載の発明では、前記セグメント吊り上げ工程において、複数のセグメントを吊り上げるので、施工作業の迅速を達成でき施工期間を短縮することができる。   In the invention according to claim 2, since the plurality of segments are lifted in the segment lifting step, the speed of the construction work can be achieved and the construction period can be shortened.

請求項3に記載の発明では、既設桁上を自走可能な架設作業車と、既設桁上を自走可能な移送台車とを備えた橋梁架設用装置であって、前記架設作業車に揚重機構と、作業台を備えるとともに、前記移送台車に移送台車用の揚重機構を備え、前記移送台車は、前記架設作業車の両側に敷設されたレール上を架設作業車の位置まで移動可能であるので、セグメントを移送台車から架設作業車に吊り換える作業が容易となり、施工作業の迅速化が可能となる。したがって、短期間でプレストレスコンクリート橋梁の施工を完成することができる。   According to a third aspect of the present invention, there is provided a bridge erection device including an erection work vehicle capable of self-propelling on an existing girder and a transfer carriage capable of self-propelling on the existing girder. In addition to a heavy mechanism and a workbench, the transfer carriage includes a lifting mechanism for the transfer carriage, and the transfer carriage can move to the position of the installation work vehicle on rails laid on both sides of the installation work vehicle. Therefore, the work of suspending the segment from the transfer carriage to the erection work vehicle becomes easy, and the construction work can be speeded up. Therefore, the construction of the prestressed concrete bridge can be completed in a short period of time.

請求項4に記載の発明では、前記移送台車用の揚重機構は、張出しビームと電動トロリーとを備え、吊り下げたセグメントを前記架設作業車に備えられた揚重機構に乗り換え可能であるので、短期間でプレストレスコンクリート橋梁の施工を完成することができる。   In the invention according to claim 4, the lifting mechanism for the transfer carriage includes an overhanging beam and an electric trolley, and the suspended segment can be transferred to the lifting mechanism provided in the construction work vehicle. The construction of prestressed concrete bridges can be completed in a short period of time.

請求項5に記載の発明では、前記作業台がセグメントの吊り下げの際に邪魔にならないように開閉可能であるので、施工作業の能率化を達成することができる。   According to the fifth aspect of the present invention, the work table can be opened and closed so as not to get in the way when the segment is suspended, so that the efficiency of construction work can be achieved.

移送台車を架設作業車の位置まで移動できるようにして、移送台車から架設作業車ヘプレキャストブロックを吊り換えを容易にし、施工作業の迅速性を確保した橋梁架設用装置を実現した。   The transfer trolley can be moved to the position of the erection work vehicle, and the precast block can be easily remounted from the transfer trolley to the erection work vehicle.

以下、一実施の形態を示す図面に基づいて本発明を詳細に説明する。図1〜14(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、図1〜14(b)は、その正面図である。ここで、本実施例の橋梁架設工法は、移送台車12に備えられた揚重機構13でセグメント11を地上から吊り上げるセグメント吊り上げ工程と、セグメントを吊ったまま移送台車12を架設作業車20の作業位置Bまで前進させる移送台車前進工程と、移送台車12の揚重機構13に設けた張出しビーム15を架設作業車20に備えた揚重機構21で仮吊りする仮吊り工程と、張出しビーム15上でセグメント11を架設作業車20の揚重機構位置Aまで前進させ、セグメント11を架設作業車20の揚重機構21に吊り換える吊り換え工程と、移送台車12を初期位置まで後退させる移送台車後退工程と、架設作業車20の揚重機構21でセグメント11を施工位置まで吊り上げる吊り上げ工程と、セグメントとの接合面29aに接着剤を塗布するとともに、シースにPC鋼材を挿入して緊張することによりセグメント11を接合するセグメント接合工程と、セグメント取付梁17を切り離し、セット用アンカー27を外し、アンカージャツキ26を引き込み、駆動機構25により架設作業車20を前進させる架設作業車移動工程と、架設作業車20の移動後、セット用アンカー27とアンカージャッキ26を主桁29にセットするとともに、移動用反力受ローラ28を前進させ主桁29にセットする架設作業車固定工程とから構成されている。   Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment. FIGS. 1-14 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, and FIGS. 1-14 (b) is the front view. Here, the bridge erection method of the present embodiment is a segment lifting process in which the segment 11 is lifted from the ground by the lifting mechanism 13 provided in the transfer carriage 12, and the transfer carriage 12 is suspended from the work while the segment is suspended. A forward movement step of moving the carriage to the position B, a temporary suspension step of temporarily hanging the extension beam 15 provided on the lifting mechanism 13 of the transfer carriage 12 by the lifting mechanism 21 provided on the construction work vehicle 20, Then, the segment 11 is moved forward to the lifting mechanism position A of the erection work vehicle 20 and the segment 11 is suspended from the lifting mechanism 21 of the erection work vehicle 20 and the transfer carriage is retracted to the initial position. Adhesives on the joint surface 29a of the process, the lifting process of lifting the segment 11 to the construction position by the lifting mechanism 21 of the erection work vehicle 20, and the segment A segment joining step for joining the segment 11 by inserting a PC steel material into the sheath and applying tension to the sheath, and separating the segment mounting beam 17, removing the set anchor 27, pulling in the anchor jack 26, and driving mechanism 25 The construction work vehicle moving step of moving the construction work vehicle 20 forward by the above-described steps, and after the construction work vehicle 20 is moved, the setting anchor 27 and the anchor jack 26 are set on the main girder 29 and the movement reaction force receiving roller 28 is advanced. The construction work vehicle fixing process is set in the main beam 29.

図1において、トレーラー10で橋脚の近傍に搬送したセグメント11を移送台車12に備えられた揚重機構13で吊り上げる。揚重機構13は、電動チェーンブロック14と、張出しビーム15と、電動トロリー16と、セグメント取付梁17とから構成されている。セグメント取付梁17は、セグメント11の上端にに取り付けられ、セグメント11を電動トロリー16に取り付ける。電動トロリー16は、張出しビーム15に取り付けられており、張出しビーム15の範囲でセグメント11を水平移動することができる。張出しビーム15は、電動チェーンブロック14から垂下されたチェーン14aに取り付けられている。   In FIG. 1, a segment 11 conveyed to the vicinity of a pier by a trailer 10 is lifted by a lifting mechanism 13 provided in a transfer carriage 12. The lifting mechanism 13 includes an electric chain block 14, an overhang beam 15, an electric trolley 16, and a segment mounting beam 17. The segment attachment beam 17 is attached to the upper end of the segment 11 and attaches the segment 11 to the electric trolley 16. The electric trolley 16 is attached to the extended beam 15 and can move the segment 11 horizontally within the range of the extended beam 15. The overhanging beam 15 is attached to a chain 14 a suspended from the electric chain block 14.

移送台車12は、断面ほぼコ字状のアーム部12aとこのアーム部12aを既設主桁上に敷設された移送台車用レール18上を水平移動する駆動機構19を有している。また、移送台車用レール18は、セグメント11の上面に予め設けておいてもよい。   The transfer carriage 12 has an arm portion 12a having a substantially U-shaped cross section and a drive mechanism 19 for horizontally moving the arm portion 12a on a transfer carriage rail 18 laid on an existing main girder. Further, the transfer carriage rail 18 may be provided in advance on the upper surface of the segment 11.

架設作業車20は、ガーダー方式で構成されたノーズ20aと、このノーズ20aに沿って移動可能な揚重機構21と、作業台22と、作業台吊り上げ機構23と、架設作業車用レール24に沿って架設作業車20を移動する駆動機構25と、後端部に取り付けられたアンカージャッキ26と、セット用アンカー27、移動用反力受ローラ28等から構成されている。架設作業車用レール24は、既設主桁の上面に敷設された移送台車用レール18の内側に敷設される。なお、架設作業車用レール24もセグメント11に予め敷設しておいてもよい。本実施例では、架設作業車用レール24は、4本敷設され駆動機構25がこの上に載置される。   The erection work vehicle 20 includes a nose 20a configured in a girder system, a lifting mechanism 21 movable along the nose 20a, a work table 22, a work table lifting mechanism 23, and a work vehicle rail 24. A drive mechanism 25 that moves the construction work vehicle 20 along, an anchor jack 26 attached to the rear end, a set anchor 27, a moving reaction force receiving roller 28, and the like. The erection work vehicle rail 24 is laid inside the transfer carriage rail 18 laid on the upper surface of the existing main girder. The erection work vehicle rail 24 may also be laid in advance in the segment 11. In this embodiment, four construction work vehicle rails 24 are laid, and a drive mechanism 25 is placed thereon.

図2は、移送台車12の揚重機構13でセグメント11を主桁29の下まで吊り上げる、セグメント吊り上げ工程を示すものである。ここでは、一個のセグメント11を吊り上げる場合を示しているが、2個或いは3個以上のセグメントを吊り上げるようにしてもよい(図3参照)。   FIG. 2 shows a segment lifting process in which the lifting mechanism 13 of the transfer carriage 12 lifts the segment 11 below the main beam 29. Here, a case where one segment 11 is lifted is shown, but two or three or more segments may be lifted (see FIG. 3).

図4は、セグメント11を吊ったまま移送台車12を移送台車用レール18上を架設作業車20の作業位置Bめで移動させる移送台車前進工程を示すものである。   FIG. 4 shows a transfer carriage advancement process in which the transfer carriage 12 is moved on the transfer carriage rail 18 to the work position B of the erection work vehicle 20 while the segment 11 is suspended.

図5は、移送台車12の揚重機構13に設けた張出しビーム15を架設作業車20に備えた揚重機構21で仮吊りする仮吊り工程を示すものである。   FIG. 5 shows a temporary suspension process in which the extension beam 15 provided in the lifting mechanism 13 of the transfer carriage 12 is temporarily suspended by the lifting mechanism 21 provided in the construction work vehicle 20.

図6〜図8は、張出しビーム上でセグメントを架設作業車の揚重機構位置まで前進させ、セグメントを架設作業車の揚重機構に吊り換える吊り換え工程と移送台車を初期位置まで後退させる移送台車後退工程とを示すものである。図6では、セグメント11を張出しビーム15上で電動トロリー16によってA位置まで前進させる。図7では、セグメント11を架設作業車20の揚重機構21に吊り換える。図8では、セグメント11を切り離した移送台車12を初期位置まで後退させる。   FIGS. 6 to 8 illustrate a transfer process in which the segment is advanced to the lifting mechanism position of the erection work vehicle on the overhanging beam, and the transfer carriage is moved back to the initial position by suspending the segment to the lifting mechanism of the erection work vehicle. It shows a trolley retreat process. In FIG. 6, the segment 11 is advanced on the overhanging beam 15 by the electric trolley 16 to the A position. In FIG. 7, the segment 11 is suspended from the lifting mechanism 21 of the construction work vehicle 20. In FIG. 8, the transfer carriage 12 from which the segment 11 has been separated is moved back to the initial position.

図9〜図10は、架設作業車の揚重機構でセグメントを施工位置まで吊り上げる吊り上げ工程を示すものである。図9では、セグメント11を主桁29の位置まで吊り上げ、図10では、作業台22を所定位置まで吊り上げる。   9 to 10 show a lifting process in which the segment is lifted to the construction position by the lifting mechanism of the construction work vehicle. In FIG. 9, the segment 11 is lifted to the position of the main beam 29, and in FIG. 10, the work table 22 is lifted to a predetermined position.

図11〜図13は、主桁29の接合面29aに接着剤を塗布するとともに、シースにPC鋼材を挿入して緊張することによりセグメントを接合するセグメント接合工程を示すものである。図11は、作業台22から主桁29の接合面29aに接着剤を塗布する作業を示すものである。図12は、セグメント11内に配置された図外のシースに図外のPC鋼材を挿入して緊張し、セグメントを接合する。緊張後、グラウト材を注入する。図13では、接合したセグメント上面からセグメント取付梁17を切り離す。   FIGS. 11-13 shows the segment joining process which joins a segment by apply | coating an adhesive agent to the joining surface 29a of the main girder 29, and inserting and tensioning PC steel materials in a sheath. FIG. 11 shows an operation of applying an adhesive from the work table 22 to the joint surface 29 a of the main beam 29. In FIG. 12, a PC steel material (not shown) is inserted into a sheath (not shown) arranged in the segment 11 and is tensioned to join the segments. After tension, inject grout material. In FIG. 13, the segment mounting beam 17 is cut off from the upper surface of the joined segments.

図14は、アンカージャッキ26を引き込み、駆動機構25により架設作業車を前進させる架設作業車移動工程を示すものである。セット用アンカー27を外し、アンカージャッキ26を引き込み、駆動機構25により架設作業車20を前進させる。   FIG. 14 shows a construction work vehicle moving process in which the anchor jack 26 is pulled in and the construction work vehicle is advanced by the drive mechanism 25. The anchor 27 for setting is removed, the anchor jack 26 is pulled in, and the construction work vehicle 20 is advanced by the drive mechanism 25.

図15は、架設作業車20の移動後、セット用アンカー27とアンカージャッキ26を主桁29にセットするとともに、移動用反力受ローラ28を前進させ主桁29にセットする架設作業車固定工程を示すものである。   FIG. 15 shows a construction work vehicle fixing step in which, after the construction work vehicle 20 is moved, the setting anchor 27 and the anchor jack 26 are set on the main girder 29 and the movement reaction force receiving roller 28 is advanced and set on the main girder 29. Is shown.

以上のような各工程を順次繰り返すことにより、プレストレスコンクリート橋梁を迅速に架設することができる。このように本発明の橋梁架設工法によれば、セグメントの移送台車から架設作業車への吊り換え作業を容易にして、施工期間の短縮と、コストの削減を図ることができる。   A prestressed concrete bridge can be erected quickly by repeating the above steps in sequence. As described above, according to the bridge erection method of the present invention, it is possible to facilitate the work of changing the segment from the transfer carriage to the erection work vehicle, thereby shortening the construction period and reducing the cost.

また、本発明の橋梁架設用装置は、既設桁上を自走可能な架設作業車20と、既設桁上を自走可能な移送台車12とを備えるとともに、前記架設作業車20に揚重機構25と、吊り下げ式の作業台22を備える、前記移送台車12に移送台車用の揚重機構13を備え、前記移送台車12は、前記架設作業車20の両側に敷設された移送台車用レール18上を架設作業車20の位置まで移動可能である。   The bridge erection apparatus of the present invention includes an erection work vehicle 20 capable of self-propelling on an existing girder and a transfer carriage 12 capable of self-propelling on the existing girder. 25, and a lifting carriage 13 on the transfer carriage 12 including a suspension worktable 22, and the transfer carriage 12 is provided on both sides of the erection work vehicle 20 with rails for the transfer carriage. 18 can be moved to the position of the construction work vehicle 20.

ここで、架設作業車20のノーズ20aは、ガーダー方式で構成されている。つまり、従来のトラス構造ではなく、箱形状の鋼製桁を2本並べた構造となっている。また、このノーズ20aに沿って移動可能な揚重機構21は、チェーンブロック等から構成されている。作業台22は、作業台吊り上げ機構23によって吊り下げられており、上下方向および水平方向に移動することができる。また、作業台22は、開閉可能に効果されている。架設作業車20は、架設作業車用レール24に沿って駆動機構25によって移動することができる。更に、ノーズ20aの後端部は、アンカージャッキ26、セット用アンカー27、移動用反力受ローラ28等によって固定される。   Here, the nose 20a of the construction work vehicle 20 is configured by a girder method. That is, it is not a conventional truss structure, but has a structure in which two box-shaped steel girders are arranged. Further, the lifting mechanism 21 movable along the nose 20a is constituted by a chain block or the like. The work table 22 is suspended by a work table lifting mechanism 23 and can move in the vertical direction and the horizontal direction. The work table 22 is effective to be opened and closed. The erection work vehicle 20 can be moved by the drive mechanism 25 along the erection work vehicle rail 24. Further, the rear end portion of the nose 20a is fixed by an anchor jack 26, a setting anchor 27, a moving reaction force receiving roller 28, and the like.

以上のように構成した橋梁架設用装置は、移送台車から架設作業車へのセグメントの吊り換えを容易にして、施工期間の短縮化を達成することができる。   The bridge erection device configured as described above can facilitate the suspension of the segment from the transfer carriage to the erection work vehicle, and can shorten the construction period.

図1(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.1 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図2(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.2 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図3(a)は、本発明に係る橋梁架設工法における2個のセグメントを吊り上げる場合を示す側面図、(b)は、その正面図である。Fig.3 (a) is a side view which shows the case where two segments are lifted in the bridge construction method concerning this invention, (b) is the front view. 図4(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.4 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図5(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.5 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図6(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.6 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図7(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.7 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図8(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.8 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図9(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.9 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図10(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.10 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図11(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.11 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図12(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.12 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図13(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.13 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図14(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.14 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view. 図15(a)は、本発明に係る橋梁架設工法における橋梁の施工手順を示す側面図、(b)は、その正面図である。Fig.15 (a) is a side view which shows the construction procedure of the bridge in the bridge construction method concerning this invention, (b) is the front view.

符号の説明Explanation of symbols

10 卜レーラー
11 セグメント
12 移送台車
12a アーム部
13 揚重機構
14 電動チェーンブロック
14a チェーン
15 張出しビーム
16 電動トロリー
17 セグメント取付梁
18 移送台車用レール
19 駆動機構
20 架設作業車
20a ノーズ
21 揚重機構
22 作業台
23 作業台吊り上げ機構
24 架設作業車用レール
25 駆動機構
26 アンカージャッキ
27 セット用アンカー
28 移動用反力受ローラ
29 主桁
29a 接合面
DESCRIPTION OF SYMBOLS 10 Railer 11 Segment 12 Transfer cart 12a Arm part 13 Lifting mechanism 14 Electric chain block 14a Chain 15 Overhang beam 16 Electric trolley 17 Segment mounting beam 18 Rail for transfer cart 19 Drive mechanism 20 Construction work vehicle 20a Nose 21 Lifting mechanism 22 Work table 23 Work table lifting mechanism 24 Rail for construction work vehicle 25 Drive mechanism 26 Anchor jack 27 Anchor for setting 28 Reaction force receiving roller 29 for moving 29 Main girder 29a Joint surface

Claims (4)

主桁上に設置された移送台車用レール上の移送台車に備えられた揚重機構でセグメント取付梁に取り付けられたセグメントを地上から吊り上げるセグメント吊り上げ工程と、
セグメントを吊ったまま移送台車を移送台車用レールに沿って架設作業車の作業位置まで前進させる移送台車前進工程と、
移送台車の揚重機構に設けた張出しビームを架設作業車に備えた揚重機構で仮吊りする仮吊り工程と、
張出しビーム上でセグメントを架設作業車の揚重機構位置まで前進させ、セグメントを架設作業車の揚重機構に吊り換える吊り換え工程と、
移送台車を移送台車用レールに沿って初期位置まで後退させる移送台車後退工程と、
架設作業車の揚重機構でセグメントを施工位置まで吊り上げる吊り上げ工程と、セグメントの接合面に接着剤を塗布するとともに、シースにPC鋼材を挿入して緊張することによりセグメントを接合するセグメント接合工程と、
接合されたセグメントからセグメント取付梁を切り離し、架設作業車を主桁に固定するセット用アンカーを主桁から外し、架設作業車を下から支えるアンカージャッキを収縮させて主桁から引き離すとともに下端が主桁に固定された移動用反力受ローラで上から支承しつつ、駆動機構により架設作業車を主桁上で前進させる架設作業車移動工程と、
架設作業車の移動後、セット用アンカーとアンカージャッキを主桁にセットするとともに、下端が主桁に固定された移動用反力受ローラを前進させた位置の主桁にセット固定する架設作業車固定工程とからなることを特徴とする橋梁架設工法。
A segment lifting process in which the segment attached to the segment mounting beam is lifted from the ground by the lifting mechanism provided in the transfer carriage on the rail for the transfer carriage installed on the main beam ;
A transfer carriage advance step of advancing the transfer carriage along the transfer carriage rail to the working position of the erection work vehicle with the segments suspended;
A temporary suspension step of temporarily suspending the extension beam provided in the lifting mechanism of the transfer carriage by the lifting mechanism provided in the construction work vehicle;
A suspending step of advancing the segment to the lifting mechanism position of the erection work vehicle on the overhanging beam, and suspending the segment to the lifting mechanism of the erection work vehicle;
A transfer carriage retracting step for retracting the transfer carriage along the rail for the transfer carriage to an initial position;
A lifting process for lifting the segment to the construction position by the lifting mechanism of the construction work vehicle, a segment joining process for joining the segment by applying an adhesive to the joining surface of the segment and inserting a PC steel material into the sheath and tensioning ,
Disconnect segment mounting beam from the bonded segments, a set anchors to secure the erection work vehicle in the main girder removed from the main girder, the lower end with away from the main girder to contract an anchor jacks supporting the erection work vehicle from below the main An erection work vehicle moving step in which the erection work vehicle is moved forward on the main girder by the drive mechanism while being supported from above by a moving reaction force receiving roller fixed to the spar ;
After the movement of the erection work vehicle, with sets set anchors and anchor jack main girder, erection work vehicle that the lower end is set fixed to the main girder locations to advance the reaction force receiving roller movement that is fixed to the main girder A bridge erection method characterized by comprising a fixing process.
前記セグメント吊り上げ工程において、複数のセグメントを吊り上げることを特徴とする請求項1に記載の橋梁架設工法。   The bridge erection method according to claim 1, wherein a plurality of segments are lifted in the segment lifting step. 既設桁上を自走可能な架設作業車(20)と、
既設桁上を自走可能な移送台車(12)とを備えた橋梁架設用装置であって、
前記架設作業車に揚重機構(21)と、作業台(22)を備えるとともに、前記移送台車に移送台車用の揚重機構(13)を備え、
前記移送台車は、前記架設作業車の両側に敷設されたレール上を架設作業車の位置まで移動可能であり、
前記移送台車用の揚重機構は、張出しビームと電動トロリーとを備え、吊り上げたセグメントを前記架設作業車に備えられた揚重機構に乗り換え可能であることを特徴とする橋梁架設用装置。
An erection work vehicle (20) capable of self-propelling on an existing girder;
A bridge erection device comprising a transfer carriage (12) capable of self-propelling on an existing girder,
The construction work vehicle is provided with a lifting mechanism (21) and a work table (22), and the transfer carriage is provided with a lifting mechanism (13) for the transfer carriage,
Said transfer carriage, Ri movable der on rails laid on both sides of the erection work vehicle to the position of the installation work vehicle,
The lifting mechanism for the movable carriage is provided with an overhanging beam with an electric trolley, bridge erection equipment characterized the next possible Rukoto transfer the lifting segment in lifting mechanism provided on the erection work vehicle.
前記架設作業車に設けられたノーズの長手方向に移動可能な複数の作業台吊り上げ機構によって吊り上げられた作業台は、セグメントの吊り上げの際にセグメントの前後に開閉可能であることを特徴とする請求項3に記載の橋梁架設用装置。 The work table lifted by a plurality of work table lifting mechanisms movable in the longitudinal direction of the nose provided on the construction work vehicle can be opened and closed before and after the segment when the segment is lifted. Item 4. The bridge erection device according to item 3.
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CN111519546A (en) * 2020-05-26 2020-08-11 武船重型工程股份有限公司 Three-dimensional application engineering frame of steel anchor beam

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